A practical guide to CNC machining tolerances, cost, inspection and when tight tolerance is truly needed.
CNC machining tolerance is not only a number on a drawing. It affects machine time, tooling, inspection method, scrap risk and final price.
Many buyers ask for ±0.01mm on every dimension because they want safety. In real production, it is better to identify the dimensions that affect assembly, movement, sealing or alignment.
Start with the function of the part. If a dimension affects assembly, sealing, motion or alignment, it deserves more attention than a purely cosmetic feature.
A clear drawing and honest discussion often reduce cost better than forcing every supplier to quote blindly. ANOK reviews tolerance, material, finish and delivery requirements before production.
Send your drawing, quantity and material requirement. Our team will reply with manufacturing questions when needed instead of giving a risky quote without review.
Send your 2D/3D files, material, quantity, tolerance and surface finish requirement. ANOK replies within 12 hours.
Send RFQ to ANOK